A few years ago, your friend gave you a puppy that was said to have been sent to your friend's house one day, but it‘s looked weak and friend already had several puppies in his house, so he gave it to you because he was afraid he wouldn't take care of it.

You're nice to the puppy, it's cute and obedient. You thought you'd be so in harmony with it until one day, you got up in the middle of the night to drink water and found a man in the living room, and his neck…Is it the puppy‘s collar?